Philips EM5A NTSC Service Manual page 139

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FBSCO
FBX
FDS
FILAMENT
FLASH
FM
G-TXT
GND-DRIVE
HA50
HD100
HD@HOME
HFB
HIP
HOP
HP
Interlaced
Last Status
LDP
LED
LINE-DRIVE
LNA
LSP
MSP
MUTE
NC
NVM
O/C
ON/OFF LED
OSD
OTC
P50
PCB
PICNIC
PIP
Progressive Scan
PTP
Circuit Descriptions and Abbreviation List
Fixed Beam Current Switch Off, a 140
V dip detection to activate the black
switch off circuit
Feature BoX: part of the small signal
board /separate module which
contains 100 Hz processing, extra
features and AutoTV algorithms
(FBX6= based on PICNIC, FBX7=
based on PICNIC and Eagle)
Full Dual Screen
Filament of CRT
FLASH memory
Field Memory or Frequency
Modulation
Green TeleteXT
A separate ground for the line-drive
toward the line driver
Horizontal Acquisition 1fh: horizontal
sync pulse coming out of the HIP
Horizontal Drive 2fH: horizontal sync
pulse coming out of the feature-box
A signal from the OTC, to switch the
HOP to the Pixel Plus standard (60 Hz
frame)
Horizontal Flyback Pulse: horizontal
sync pulse from large signal deflection
High-end video Input Processor
(TDA9320): video and chroma
decoder.
High-end video Output Processor
(TDA9330): video, sync, and
geometry controller
HeadPhone
Scan mode where two fields are used
to form one frame. Each field contains
half the number of the total amount of
lines. The fields are written in 'pairs,'
causing line flicker
The settings last chosen by the
customer and read and stored in RAM
or in the NVM. They are called at start-
up of the set to configure it according
to the customer's preferences
Line Deflection Protection signal,
derived from the EW current and
voltage
Light Emitting Diode
LINE DRIVE signal (for the Line
transistor)
Low Noise Adapter
Large Signal Panel
Multi-standard Sound Processor: ITT
sound decoder
MUTE Line
Not Connected
Non Volatile Memory: IC containing
TV related data such as alignments
Open Circuit
ON/OFF control signal for the LED
On Screen Display
On screen display Teletext and
Control; also called Artistic (SAA5800)
Project 50 communication: protocol
between TV and peripherals
Printed Circuit Board
Peripheral Integrated Combined
Network IC (SAA4978): main IC for
100 Hz features and feature
processing
Picture In Picture
Scan mode where all scan lines are
displayed in one frame at the same
time, creating double vertical
resolution.
Picture Tube Panel
EM5A NTSC
RAM Random Access Memory
R-TXT Red TeleteXT
RC Remote Control
RC5 / RC6 Signal protocol from the remote
control receiver
RESET RESET signal
RGB-PIP RGB-input for PIP
RGB-TXT RGB-input for TeleteXT and OSD
RGB-VC RGB-input to the Picture Tube Panel
ROM Read Only Memory
SAM Service Alignment Mode
SC SandCastle: two-level pulse derived
from sync signals
S/C Short Circuit
SCAVEM SCAn VElocity Modulation
SCL-F CLock Signal on Fast I
SD Standard Definition
SDA-F DAta Signal on Fast I
SIF Sound Intermediate Frequency
SIMM 80-fold connector between LSP and
SSB
SNERT Synchronous No parity Eight bit
Reception and Transmit
SSB Small Signal Board
STBY STandBY
SW SubWoofer
TXT TeleteXT
µP
Microprocessor
U100 U from Feature Box
V100 V from Feature Box
VA50 Vertical Acquisition 1fH
VBAT Main supply for deflection (usually 141
V)
VD100 Vertical Drive 2fH: vertical sync pulse
from deflection
VDPOS One of the symmetrical drive signals
for the DC frame output stage.
VDNEG One of the symmetrical drive signals
for the DC frame output stage.
VFB Vertical Flyback Pulse: vertical sync
pulse coming from the feature box
VL Variable Level out: processed audio
output toward external amplifier
WYSIWYR What You See Is What You Record:
record selection that follows main
picture and sound
X-RAY-PROT A PROTection signal against
excessive X-RAY radiation
XTAL Quartz crystal
Y100 Y from Feature Box
Y-OUT Luminance-signal to HOP IC
YUV-Feat The YUV input for the main picture,
coming from the Feature box or the
HIP
9. EN 139
2
C bus
2
C bus